He also rents out bikes 2013 Honda XR 125. Fitted out with saddle bags and ready to hit the road. It os possible to rent in Hanoi and drop them off in Danang or HCMC, he charges a fees to ship them back to Hanoi, but works great if you want to drive the Ho Chi Minh highway from North to South.

If you are open to touring without a guide you can rent a two stroke Minsk 175 for what I believe was less than $20 a day. In fact it may have been less than $10.
IMO you don't need a guide for Norther Nam. The roads are fairly descent, people are hospitable and there is a reasonable amount of infrastructure in case of emergencies. Back in 2008 it took me about one week to ride from Hanoi to Sapa. From Sapa, you can through the bike on the overnight train going back to Hanoi and spend the night in a 4 person sleeping cabin.

I have more pics of the Minsk somewhere. If you want them just say so.

Ill second Hanoi Steve's assessment ! ! Im just back from Vietnam and myself and my girlfriend did a tour with Cuong's motorbike Adventure ! it was one of the best tours ive done in the last 10yrs of travelling ! Cant say enough about the tour / or the Man . We did other trips in the south and none even came close to what Cuong delivered . Im looking at going back for a 10-12 day trip , we only did a 4-5 day as that all we had time for . Good luck on your trip and choose wisely

I'll third Hanoi Steve's assessment. A few years ago my buddy and I rode from Hanoi to HCMC and we rented bikes from Cuong. Cuong’s website says, “You will meet our person in HCMC where the bike will be inspected, deposit will be returned to you.” True to his words, when we reached Saigon it took Cuong’s man 1 hour to meet us, looked over the bikes and handed me an envelope with my entire cash deposit

Anyone been on a tour with this mob? Looking to do a ride with them in the next few months.

Advridevietnam.com

I've been doing lots of homework on who to rent a bike from in hanoi. in the process all the feedback I've got for great tour operators (in order of rating) are Cuongs bikes, offroadvietnam (who wont rent me a bike because i was to demanding with my questions).
also a guy in vietanne laos who has great bikes WR450 is jules classic rental. good french bloke, sounds like a real dirt bike adventure rather than mostly paved. depends what you want. Laos sounds more adventurous than vietnam.
I'm going to rent for a month and follow my nose, oh and the vietnamese women.

I've been doing lots of homework on who to rent a bike from in hanoi. in the process all the feedback I've got for great tour operators (in order of rating) are Cuongs bikes, offroadvietnam (who wont rent me a bike because i was to demanding with my questions).
also a guy in vietanne laos who has great bikes WR450 is jules classic rental. good french bloke, sounds like a real dirt bike adventure rather than mostly paved. depends what you want. Laos sounds more adventurous than vietnam.
I'm going to rent for a month and follow my nose, oh and the vietnamese women.